Periodic AS400 job randomly goes into an “ENDED_VANISHED” status

Document ID : KB000125417
Last Modified Date : 28/01/2019
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An AS400 job randomly goes into an “ENDED_VANISHED” status. even though the job's script has completed successfully.
This is a bug in the AS400 Agent where jobs cannot be tracked after the Agent restarts. 
This issue has been confirmed as a bug and is fixed in the following versions:

Automation Engine 12.1.4 - Available for Download
Automation Engine 12.3.0 - planned release for June 28, 2019
Automation Engine 12.2.2 - planned release for February 28, 2019